SANFORD — A teen-age accomplice in the murder of a flower shop clerk has been admitted to a Longwood psychiatric unit because she has talked about committing suicide.

Suzanne Phillips, 15, was moved from the county's juvenile detention center to West Lake Hospital in Longwood after an emergency court hearing Monday in which her lawyers said they feared she would try to kill herself.

In their moiton to Seminole Circuit Judge O.H. Eaton Jr., attorneys Dominick Salfi and Mark Rabinowitz said their client has had and continues to have serious psychiatric disorders.

They said Phillips had been hospitalized in January at Florida Hospital Altamonte after an apparent suicide attempt and that several psychiatrists and psychologists who have evaluated the girl since her arrest in June maintain she still has suicidal thoughts.

Her suicidal tendencies have worsened, the attorneys said, since Phillips pleaded guilty to manslaughter, and since her 16-year-old boyfriend, Edwin Paul Bateman, hanged himself at the Seminole County jail.

Both were indicted in July on charges of first-degree murder of Diane McGinnis, 39, a clerk at Floral Creations in Forest City. Both teen-agers said Bateman accidentally shot her in the head during a robbery June 23.

Phillips' attorneys said that her condition ''has worsened to such a severe degree'' recently that her attorneys and medical personnel considered her a ''great risk'' to commit suicide.

The attorneys also said that Phillips' self-destructiveness had reached a point that she used a paper clip to remove flesh from a forearm while at the juvenile center.

Bateman was found dead a few hours before Phillips pleaded guilty to manslaughter Aug. 27. Judge Eaton had ordered that she remain under close watch pending her Oct. 9 sentencing.

Phillips could spend three to seven years in prison under state sentencing guidelines.